For regular contact with thatch suppliers a tweed suit and a pipe are adequate, but if you are young enough not to have been issued with a measuring staff and round spectacles when you finished your apprenticeship, you will have to try harder.
The easiest and laziest outfit for the office is a set of naturally-dyed clothes from the Gap. This gives the impression of being too busy to take any interest in clothing and not being concerned with taste; an impression which is perfectly true, and equally likely to be true of the provincial geography students who sport the same look every day until they become planning officers. Patrons of the arts do not want their architects to look like this, although they don't actually mind if the person doing the door schedule does.
Smart - suits and leathersoled shoes - is still the industry standard for dealing with anyone except dotcom tycoons and hairdressers. It doesn't matter if your suit is from Gieves & Hawkes and your shoes from Lobb, they will remain, in the eyes of fellow professionals, just a suit; in every way equivalent to their Mister Byrite/ Timpson's combo. So don't get carried away; the more you like it, the more certain it is to fall foul of wet concrete or Heras fencing.
In fashionable Hoxton you will be obliged to invest in some very uncomfortablelooking garments. Remember when your mother tried to send you out to play in the snow wearing a cagoule cut like a fertiliser sack, waterproof trousers with ankle drawstrings and shoes carved out of flower arranger's foam.
Well, that look's back, and what's more, it's compulsory if you want t o work for Cl@mp or In2it and spend the next year designing the office hairstyle.